Is there a guide for web.config settings?

Hi is there a guide or tutorial or some kind of reference to learn how to work with asp/net mvc web.config file?

From stackoverflow

• • MSDN - ASP.NET Configuration Overview
  • MSDN - ASP.NET Configuration File Hierarchy and Inheritance
  • MSDN - ASP.NET Configuration Settings

• If you mean a reference of the "system settings", start with this page in MSDN: ASP.NET Configuration File Syntax

  If you're looking for information about how to add your own settings to the web.config file and read them from the application, then look at the ConfigurationManager class